Android M运行时权限问题
1、Android M对权限管理系统进行了改版,之前我们的App需要权限,只需在manifest中申明即可,用户安装后,一切申明的权限都可来去自如的使用。但是Android M把权限管理做了加强处理,在manifest申明了,在使用到相关功能时,还需重新授权方可使用。当然,不是所有权限都需重新授权,所以就把这些需要重新授权方可使用的权限称之为运行时权限。
2、如果App的targetSdkVersion 是23也就是android 6.0的话,遇到运行时权限不去做代码处理的话,程序直接崩掉。
所以:if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) 区分系统
Build.VERSION.SDK_INT 手机的操作系统版本号,比如8.1对应的SDK_INT是27
3、不用特殊处理的权限,android称之为普通权限:
参考链接:http://developer.android.com/guide/topics/security/normal-permissions.html
As of API level 23, the following permissions are classified as PROTECTION_NORMAL:
android.permission.ACCESS_LOCATION_EXTRA_COMMANDS
android.permission.ACCESS_NETWORK_STATE
android.permission.ACCESS_NOTIFICATION_POLICY
android.permission.ACCESS_WIFI_STATE
android.permission.ACCESS_WIMAX_STATE
android.permission.BLUETOOTH
android.permission.BLUETOOTH_ADMIN
android.permission.BROADCAST_STICKY
android.permission.CHANGE_NETWORK_STATE
android.permission.CHANGE_WIFI_MULTICAST_STATE
android.permission.CHANGE_WIFI_STATE
android.permission.CHANGE_WIMAX_STATE
android.permission.DISABLE_KEYGUARD
android.permission.EXPAND_STATUS_BAR
android.permission.FLASHLIGHT
android.permission.GET_ACCOUNTS
android.permission.GET_PACKAGE_SIZE
android.permission.INTERNET
android.permission.KILL_BACKGROUND_PROCESSES
android.permission.MODIFY_AUDIO_SETTINGS
android.permission.NFC
android.permission.READ_SYNC_SETTINGS
android.permission.READ_SYNC_STATS
android.permission.RECEIVE_BOOT_COMPLETED
android.permission.REORDER_TASKS
android.permission.REQUEST_INSTALL_PACKAGES
android.permission.SET_TIME_ZONE
android.permission.SET_WALLPAPER
android.permission.SET_WALLPAPER_HINTS
android.permission.SUBSCRIBED_FEEDS_READ
android.permission.TRANSMIT_IR
android.permission.USE_FINGERPRINT
android.permission.VIBRATE
android.permission.WAKE_LOCK
android.permission.WRITE_SYNC_SETTINGS
com.android.alarm.permission.SET_ALARM
com.android.launcher.permission.INSTALL_SHORTCUT
com.android.launcher.permission.UNINSTALL_SHORTCUT
4、运行时权限,android称之为危险权限(google还对其分了组):
参考链接:http://developer.android.com/guide/topics/security/permissions.html#normal-dangerous同一组的任何一个权限被授权了,其他权限也自动被授权。例如,一旦WRITE_CONTACTS被授权,app也有READ_CONTACTS和GET_ACCOUNTS权限。